Digital Commons Network^™

An Examination Of Psychological Variables Influencing Perceptions Of The Self Among A Sample Of Female Exercise Initiates, Lisa Cooke

Electronic Thesis and Dissertation Repository

The general purpose of this dissertation was to explore the relationship among and within cognitive variables associated with exercise initiation and maintenance in a sample of female exercise initiates.

Manuscript 1 was structured to explore the changes to exercise identity among a population of female exercise initiates (N = 78) grouped into an imagery or control condition. Previous research has found that a strong exercise identity is associated with more frequent exercise (Strachan et al., 2009) and increases over time as a person continues to exercise (Cardinal & Cardinal, 1997). Participants were assessed multiple times (weeks 0, 5, 9, …

Objective Measures And Insight Assessments Of Muscle Dysmorphia, Austin Blake Lowe

Masters Theses & Specialist Projects

Muscle dysmorphia is a relatively new psychological disorder primarily affecting males who engage in weightlifting or bodybuilding. Individuals with this disorder are obsessed with the idea that their body is not sufficiently lean or muscular when compared to others and engage in several, risky behaviors (i.e., frequent exercise sessions, anabolic steroid use, structured diets) to increase muscularity. As obtaining and maintaining a muscular physique is so important to his or her self-worth, an individual may have little insight to how their behaviors are affecting their social and occupational lives and are reluctant to seek out psychological treatment. The purpose of …

Physical Activity And Brain Function In Older Adults At Increased Risk For Alzheimer’S Disease, J. Carson Smith, Kristy A. Nielson, John L. Woodard, Michael Seidenberg, Stephen M. Rao

Kristy Nielson

Leisure-time physical activity (PA) and exercise training are known to help maintain cognitive function in healthy older adults. However, relatively little is known about the effects of PA on cognitive function or brain function in those at increased risk for Alzheimer’s disease through the presence of the apolipoproteinE epsilon4 (APOE-ε4) allele, diagnosis of mild cognitive impairment (MCI), or the presence of metabolic disease. Here, we examine the question of whether PA and exercise interventions may differentially impact cognitive trajectory, clinical outcomes, and brain structure and function among individuals at the greatest risk for AD. The literature suggests that the protective …

Interactive Effects Of Physical Activity And Apoe-Ε4 On Bold Semantic Memory Activation In Healthy Elders, J. Carson Smith, Kristy A. Nielson, John L. Woodard, Michael Seidenberg, Sally Durgerian, Piero Antuono, Alissa Butts, Nathan Hantke, Melissa A. Lancaster, Stephen M. Rao

Kristy Nielson

Evidence suggests that physical activity (PA) is associated with the maintenance of cognitive function across the lifespan. In contrast, the apolipoproteinE-ε4 (APOE-ε4) allele, a genetic risk factor for Alzheimer's disease (AD), is associated with impaired cognitive function. The objective of this study was to examine the interactive effects of PA and APOE-ε4 on brain activation during memory processing in older (ages 65–85) cognitively intact adults. A cross-sectional design was used with four groups (n = 17 each): (1) Low Risk/Low PA; (2) Low Risk/High PA; (3) High Risk/Low PA; and (4) High Risk/High PA. PA level was based on …

Semantic Memory Functional Mri And Cognitive Function After Exercise Intervention In Mild Cognitive Impairment, J Carson Smith, Kristy A. Nielson, Piero Antuono, Jeri-Annette Lyons, Ryan J. Hanson, Alissa Butts, Nathan Hantke, Matthew D. Verber

Kristy Nielson

Mild cognitive impairment (MCI) is associated with early memory loss, Alzheimer's disease (AD) neuropathology, inefficient or ineffective neural processing, and increased risk for AD. Unfortunately, treatments aimed at improving clinical symptoms or markers of brain function generally have been of limited value. Physical exercise is often recommended for people diagnosed with MCI, primarily because of its widely reported cognitive benefits in healthy older adults. However, it is unknown if exercise actually benefits brain function during memory retrieval in MCI. Here, we examined the effects of exercise training on semantic memory activation during functional magnetic resonance imaging (fMRI). Seventeen MCI participants …

Mixed Methods Pilot Study Of Peri-Diagnostic Exercise Behaviour Change Among Women With Suspected Breast Cancer, Amy L. Deckert

Electronic Thesis and Dissertation Repository

Approximately 1 in 9 Canadian women will develop breast cancer in their lifetime (CCS, 2013). Over the past 30 years, population-based screening programs have contributed to decreased mortality rates (CCS, 2013), however the psychosocial sequelae associated with screening for breast cancer cannot be ignored (Holland et al., 2010). Although the majority of women screened will receive a benign diagnosis, the threat of malignancy can induce elevated levels of distress (Andrykowski et al., 2002).

We conducted a mixed methods pilot study to assess the feasibility and acceptability of a 6-week self-managed exercise behaviour change intervention to attenuate distress in women with …

Short-Term Changes In Responses To Stress In Runners, Molly Ann O'Connor

Theses and Dissertations

The use of physical activity to cope with stress is becoming increasingly popular. Research indicates that individuals who routinely engage in cardiovascular exercise report better overall physical and psychological health and reduced reactions to stress than those who do not. In addition, there may be short-term improvements for these individuals on days when they exercise. The current study was designed to examine short- and long-term differences between runners and non-runners. Cardiovascular, affective, and behavioral data were collected from runners over a two-day period that included a running day and a rest day, and over a similar period in a non-running …

Physical Activity Reduces Hippocampal Atrophy In Elders At Genetic Risk For Alzheimer's Disease, J. Carson Smith, Kristy A. Nielson, John L. Woodard, Michael Seidenberg, Sally Durgerian, Kathleen Hazlett, Christina Marie Figueroa, Cassandra Kandah, Christina D. Kay, Monica Matthews, Stephen M. Rao

Psychology Faculty Research and Publications

We examined the impact of physical activity (PA) on longitudinal change in hippocampal volume in cognitively intact older adults at varying genetic risk for the sporadic form of Alzheimer's disease (AD). Hippocampal volume was measured from structural magnetic resonance imaging (MRI) scans administered at baseline and at an 18-month follow-up in 97 healthy, cognitively intact older adults. Participants were classified as High or Low PA based on a self-report questionnaire of frequency and intensity of exercise. Risk status was defined by the presence or absence of the apolipoprotein E-epsilon 4 (APOE-ε4) allele. Four subgroups were studied: Low Risk/High PA ( …

The Effects Of Moderate-Intensity Acute Aerobic Exercise On Self-Disclosure, Brittany K. Woods

Honors College Theses

This study sought to determine whether a relationship exists between acute aerobic exercise, at moderate intensity, and self-disclosure due to a positive change in affect. Participants took a pre-test measure of mood, and the Exercise Group exercised for 25 minutes afterwards. The remaining participants, the Non-exercise Group, sat in the same room while the others exercised. The Non-exercise Group was told that they would exercise next, when really they would not. After the Experimental Group finished exercising, all participants took a post-test measure of mood as well as a measure of self-disclosure. Results showed that overall mood improved for those …

A Pilot Study On The Effects Of Exercise On Depression Symptoms Using Levels Of Neurotransmitters And Eeg As Markers, Timothy H. Barclay, Scott Richards, James Schoffstall, Chad Magnuson, Christine Mcphee, Josh Price, Stephen Aita, Audrey Anderson, Dan Johnson, Jerry Price

Faculty Publications and Presentations

Context: The prescribing of exercise by physicians has become a popular practice, yet the effectiveness of exercise on symptoms of depression is difficult to determine due to a lack of randomized controlled trials with clinical populations. Reports also indicate that only a small percentage of physicians advise their patients regarding exercise and confusion still exists as to how much and what types are best. Aims: To understand the mechanisms that make exercise a viable treatment in depression. Settings and Design: This study employed a six‑week, two group, single‑level trial, pre‑ and posttest design using self‑report of symptoms, blood …

The Influence Of Exercise Environment And Gender On Mood And Exertion, Thomas G. Plante, Marily A. Opezzo, L. Aislinn Diaz, Selena Pistoresi, Michael Santos, Jacqueline E. Fahey, Elizabeth Kay, Briana Britton, Suheel Khan

Psychology

This study examined the influence of exercise environment and gender on post-exercise mood and exertion. College student participants (55 females, 49 males) were instructed to pedal a stationary bike at a moderate pace for 20 minutes. Participants were randomly assigned to one of three laboratory conditions: (1) exercising in front of a mirror and posters showing ideal fit body types (i.e., celebrity male and female personal trainers), (2) exercising in front of a mirror only, or (3) a control condition in which participants exercised without a mirror or posters. The Activation- Deactivation Adjective Check List (AD-ACL), measuring exercise-induced mood states, …